ibm 2540 wikipedia - EAS
- The IBM 2540 is a punched-card computer peripheral manufactured by IBM Corporation for use of System/360 and later computer systems. The 2540 was designed by IBM's Data Processing Division in Rochester, Minnesota, and was introduced in 1965. The 2540 could read punched-cards at 1000 cards per minute (CPM) and punch at 300 CPM.Predecessor: IBM 1402Release date: 1965; 57 years agoSuccessor: IBM 3505Type: Punch card reader/writer
en.wikipedia.org/wiki/IBM_2540 - 大家還會問
查看更多內容
檢視所有 Wikipediahttps://en.wikipedia.org/wiki/IBM_2540The IBM 2540 is a punched-card computer peripheral manufactured by IBM Corporation for use of System/360 and later computer systems. The 2540 was designed by IBM's Data Processing Division in Rochester, Minnesota, and was introduced in 1965. The 2540 can read punched-cards at … 查看更多內容
The 2540 attaches to a System/360 multiplexer or selector channel through an IBM 2821 Control Unit. A standard 2540 processes standard IBM 80 column punched cards. The card reader (2540R) and card punch … 查看更多內容
With the introduction of System/370 IBM announced the improved 3525 card punch and the 3505 card reader in 1971. 查看更多內容
• Column binary – this feature, data-mode 2, allows all possible combinations of holes to be read or punched in a column.
• Punch-feed-read – this feature allows input cards to be read … 查看更多內容CC-BY-SA 授權下的維基百科文字IBM 2540 - Wikipedia
https://ja.wikipedia.org/wiki/IBM_2540IBM 2540読取穿孔装置（IBMにぃごぅよんまるカードよみとりせんこうそうち、英語: IBM 2540 Card Reader/Punch）はIBMが1965年に発表したSystem/360とそれに続くコンピューター用のIBM80欄カード読取り・穿孔装置であった。この装置はIBMロチェスターで以前のIBM 1402（IBM 1402）をベースに開発されたもので 、読取り速度は毎分1,000枚、穿孔速度は毎分300枚で処理でき …
Wikipedia · CC-BY-SA 授權下的文字- 預估閱讀時間: 1 分鐘
Category:IBM 2540 - Wikimedia Commons
https://commons.wikimedia.org/wiki/Category:IBM_2540網頁Category:IBM 2540 - Wikimedia Commons Help Category:IBM 2540 From Wikimedia Commons, the free media repository Media in category "IBM 2540" The following 6 files …
IBM 2540
https://wiko.wiki/wiki/IBM_2540網頁IBM 2540 A는 천공 카드 컴퓨터 주변 장치 에 의해 제조 되는 IBM Corporation 의 사용을위한 시스템 / 360 나중에 컴퓨터 시스템. 2540은 미네소타주 로체스터 에 있는 IBM의 데이터 처리 …
- https://en.wikipedia.org/wiki/IBM_System/360_Model_25在「en.wikipedia.org」查看更多資訊At a time when lower priced alternatives, such as service bureaus - by 1968, there were 32 such service bureaus serving the US National Institutes of Health (NIH) alone - and prior generation systems, such as the Honeywell 200, a competitor to IBM's own IBM 1401, were available, this model provided a stop-gap measure. Bo…
- https://en.wikipedia.org/wiki/IBM_System/360_Model_50
網頁March 15, 1977. ( 1977-03-15) [1] Memory. 64–512 KB Core. The IBM System/360 Model 50 is a member of the IBM System/360 family of computers. The Model 50 was announced …
- https://en.wikipedia.org/wiki/IBM_System/360_Model_40
網頁The IBM System/360 Model 40 was a mid-range member of the IBM System/360 family. It was announced on April 7, 1964, shipped in 1965, and withdrawn on October 7, 1977. [1] …
- https://en.wikipedia.org/wiki/IBM
網頁IBM is headquartered in Armonk, New York, a community 37 miles (60 km) north of Midtown Manhattan. [91] A nickname for the company is the "Colossus of Armonk". [92]Its principal …
IBM - 維基百科，自由的百科全書
- https://en.wikipedia.org/wiki/IBM_ThinkPad_240
網頁IBM ThinkPad 240 is an ultra-portable laptop computer designed and produced by IBM from June 1999 to 2001. It is one of the few ThinkPad 200 series models made available in …
